Pipe cutting apparatus



PIPE CUTTING APPARATUS y Filed April 2, 1956 3 Sheets-Sheet 1 I 'rwentof f2. (ffm/@r B Maa/5MM QM Attomeys muur,-

Aug. 17, 1937. c.,R. sTovER 2,090,431

PIPE CUTTING APPARATUS Filed April 2. 1956 s sheets-sheet 2 Inventor C. Z2. ffm/er Aug. 17, 1937. c. R. STOVER PIPE CUTTING APPARATUS Filed Aprii 2, 1936 s sheetsheet 3 C'. 5i (f7-0 Ver By,

Patented Aug. i?, i937 l narran stares paraat serien 1 Claim.

This invention appertains to new and useful improvements in means for mounting an acetylene torch in such a manner as to uniformly cut a pipe with the least amount of manual elort required in gauging and handling the torch.

Another important object of the invention is to provide an apparatus of the character described, wherein the torch is fed into the pipe in a uniform manner, so that thepipe is cut uniforrnly around its circumference. y

Other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a side elevational view of the apparatus.

Figure 2 represents a vertical sectional view through the structure.

Figure l3 represents a bottom plan view of the apparatus.

Figure 4 is a fragmentary elevational View of the scroll gear ring.

Figure 5 represents an elevation of one of the racks.

Figure 6 represents a fragmentary sectional View taken substantially on the line 6 6 of Figure 1.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the apparatus includes an annulus 5 having a rabbeted portion 6. A anged ring 'l is secured to this annulus 5, at the rabbeted portion 6, to retain the scroll gear ring 8 in position on the` annulus 5, so that the same can be rotated by its handles 9, which project laterally, as shown in Figure 2.

Pipe centering boots II) are provided in any number desired, and each is provided with a 1ongitudinally grooved shank Il having arcuate- Shaped ribs l2 disposed transversely thereon and adapted 'formesh with the scroll gear 8. The Shanks' Il "extend through openings I3 in the annulus 5, inthe manner suggested in Figure 1,

' and obviously, by rotating the scroll gear 8, the boots |0 can be moved inwardly or outwardly to properly center a pipe I4 within the annulus 5.

The opposite edge portion of the annulus 5 is circumferentially reduced and around this 'is disposed the anged ring |5 for holding the ring gear I6 in place on the annulus 5.

As is clearly shown in Figures 1 and 2, an inverted U-shaped handle |'l has the legs thereof secured to or formed with the gear casing I8, 1 which is secured by screws I9 to the top portion of the annulus 5. An elongated barrel 20 extends laterally from this gear casing i8 and serves as a bearing for the shaft 2 which is equipped with the hand crank 22 at its outer end.

The end portion of the shaft 2 I, within the casing I8, is provided with the pinion 23 meshing 5 with the gear 24 on the stub shaft 25. The hub of this gear 24 is in the form of a pinion 26 which meshes with the gear teeth of the ring gear I6. Obviously, by rotating the shaft 2| by the hand crank 22, the ring gear I6 will be revolved on the 10 annulus 5. A removable cover plate 21 is provided for the gear casing I8.

A horizontally disposed T-shaped body 28 is secured by ears 29 and screws 30 to the ring gear |6 and this forms part of the acetylene torch car- 15 rier, generally referred to by the numeral 29. Extending through the T-shaped body 28 is the stud 30 which is provided with a transversely extending and threaded bore at its' outer end portion through which the feed screw 3| is disposed. As 20 is apparent in Figure 3, the outer portion of the T-shaped body 28 is provided with a dovetail formation 32 engaged into the dovetail grooveway 33 of the elongated block 34, which is provided with an end wall 35 through which the smooth 25 end portion of the screw 3| is journaled. The screw, at its outer end, is provided with a knob 36 whereby the same can be rotated.

'Ihe inner end of the body 34 is provided with a laterally and outwardly extending pin 31 on 30 which the clamp 38 is engaged. The clamp 38 forms part of the acetylene torch tip holder. The numeral 39 represents the head of this holder which is provided with a threaded shank 4D extending through the leg portions o f the clamp 35 38 and over which the internally threaded shank 4| of the knob 42 is engageable. Obviously, by feeding the barrel 4| inwardly against the clamp 38, the head 39 and barrel 4| will be clamped against opposite sides of the clamp 38, so as to 40 retain the clamp firmly in place on the pin 3l,` thus retaining the torch tip 42 in proper position with relation to the work I4.

Obviously, when the crank 22 is rotated, the ring I6 revolves on the annulus 5, and in this 45 manner the torch is turned around the work, and as the cut is made,v the knob 36 can be rotated to gradually' feed the torch carrier 29 closer to the Work, or away depending on the size of the pipe.

As can be seen in Figure 6, the flanged rings 1 50 and I5 are retained in place by the heads 44 of screws 45 driven into the annulus 5.

While the foregoing specication sets forth the invention in specic terms, it is to be understood that numerous changes in the shape, size and 55 materials may be resorted to without departingA from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

A structure of the -class described comprising, an annulus, a, ring rotatably mounted on one side of said annulus having gear teeth,w'orkcentering members mounted on said annulus having rack teeth meshing with the gear teeth, laterally projecting handles onthe said ring for rotating said ring, said work-centering members being radially movable upon rotation of said ring, a second rotatably mounted ring on the other side of said annulus, having gears disposed on the outer periphery thereof, a gear box secured laterally of the periphery of said annulus, a gear rotatably mounted therein in mesh with the teeth on the periphery of said second gear, a pinion gear in mesh with the gear in said gear box, handle means for rotating said pinion gear, a torch holder mounted on said second ring, and 'means for ra- 1o dally and pivotally adjusting said holder.

CHARLES RALPH STOVER. 

